Summary of precision testing statistics.

Donor	PointCare NOW
	Mean (cells/µl)	Standard deviation (cells/µl)	Coefficient of Variation (%)
1	1084	40.2	3.7
2	724	50.3	6.9
3	1090	58.1	5.3
	Average = 966	Average = 49.5	Average = 5.3
		FACSCalibur Single Platform
1	1266	153.7	12.1
2	752	63.2	8.4
3	1246	51.8	4.2
	Average = 1088	Average = 89.5	Average = 8.2

Table 1: Summary of precision testing statistics for the absolute CD4 cell count obtained from three normal donors using the PointCare NOW and the FACSCalibur Single Platform.

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